The most important thing to do is to reveal the Empress Amanita (mushroom) in the bottom left corner before you start scouting anything near it to create a shortcut to the chest. There are two main approaches, either take double Heavenly Sights from the orbs and take the long path, or try to quickly clear the witch hut using Plunder Hands and Wild Harvest to get extra ingredients. Opening up the witch hut lets you use the shipwreck to remove the Amanita without going the long way.
Remember that spells charge from left to right and that Heavenly Sight recharges another spell when cast, not immediately casting a ready spell can help you charge up a different one faster. You don't need to be perfect to win, but you'll want to waste as few recovery options as possible, time your use of the tent for a full recovery.